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Standard Repair Process Detail Technical Manual
LCD TV
ALEF LED
Edge LED
Copyright © 2011 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Error
A. Video error_No video/ Audio
symptom
Content
Power Board voltage measuring method
Established
date
Revised
date
Check the DC 24V, 12V, 3.5V.
(Power Board ↔ Main Board) -
24 Pin
SMAW200-H24S (YEONHO)
1
Power on
3
20V (24V)
5
GND
7
GND
9
3.5V
11
3.5V
13
GND
15
GND
17
12V
19
12V
21
12V
23
N.C
•
Lamp SCANNING Model
: PWM Dim #2
A4
2010. 12 .14
A4
공통
2
20V (24V)
4
20V (24V)
6
GND
8
GND
10
3.5V
12
3.5V
14
GND
16
GND
18
Inverter On/off
20
Lamp : A-Dim
LED : N.C
22
PWM Dim #1
24
Error-out
LGE Internal Use Only
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